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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la201584r
|2 doi
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|a pubmed24n0703.xml
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|a eng
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1 |
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|a Priolo, Morgan A
|e verfasserin
|4 aut
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|a Influence of clay concentration on the gas barrier of clay-polymer nanobrick wall thin film assemblies
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 26.01.2012
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|a Date Revised 01.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2011 American Chemical Society
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|a The influence of the clay deposition suspension concentration on gas barrier thin films of sodium montmorillonite (MMT) clay and branched polyethylenimine (PEI), created via layer-by-layer assembly, was investigated. Films grown with MMT suspension concentrations ranging from 0.05 to 2.0 wt % were analyzed for their growth as a function of deposited polymer-clay bilayers (BL) and their thickness, clay concentration, transparency, nanostructure, and oxygen barrier as a function of the suspension concentration. The film thickness doubles and the visible light transmission decreases less than 5% as a function of MMT concentration for 20-BL films. Atomic force and transmission electron microscope images reveal a highly aligned nanobrick wall structure, with quartz crystal microbalance measurements revealing a slight increase in the film clay concentration as the MMT suspension concentration increases. The oxygen transmission rate (OTR) through these 20-BL composites, deposited on a 179 μm poly(ethylene terephthalate) film, decreases exponentially as a function of the MMT clay concentration. A 24-BL film created with 2.0 wt % MMT has an OTR below the detection limit of commercial instrumentation (<0.005 cc/m(2)·day·atm). This study demonstrates an optimal clay suspension concentration to use when creating LbL barrier films, which minimizes deposition steps and the overall processing time
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|a Journal Article
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|a Aluminum Silicates
|2 NLM
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|a Membranes, Artificial
|2 NLM
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| 650 |
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7 |
|a Bentonite
|2 NLM
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| 650 |
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|a 1302-78-9
|2 NLM
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| 650 |
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|a Polyethyleneimine
|2 NLM
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| 650 |
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7 |
|a 9002-98-6
|2 NLM
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| 650 |
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|a Clay
|2 NLM
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| 650 |
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7 |
|a T1FAD4SS2M
|2 NLM
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| 700 |
1 |
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|a Holder, Kevin M
|e verfasserin
|4 aut
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1 |
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|a Gamboa, Daniel
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grunlan, Jaime C
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 19 vom: 04. Okt., Seite 12106-14
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|x 1520-5827
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|g volume:27
|g year:2011
|g number:19
|g day:04
|g month:10
|g pages:12106-14
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|u http://dx.doi.org/10.1021/la201584r
|3 Volltext
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